On 2016-02-27 05:07 Frank O wrote: > But anyway, the limiting factor with fibre isn’t the specific hardware > networking technology used … it’s to what degree developments occur that > allow it to handle and detect more frequencies (colours) and channels. End > point technology changes, but it’s the capability of the MEDIUM that you need > to take into account. > > Yes, PON 10 GB is split 128 through channels (colours/wavelengths/discrete > )s, but PON 10TB (in 4 or 5 years time) may be able to be split to 128,000 > channels and PON 10 (to whatever power in 25 years time) may be able to > detect and channel 128,000,000,000 channels ON A SINGLE FIBRE - and there are > many distinct fibres in a cable. It’s simply a matter of the start and end > point devices on that network being able to produce, detect and monitor same > … and that’s a technology problem for the start and end-points. > > That’s the beauty of an analogue medium like light. Who ever thought we’d be > going back to analogue after digital got such great press?
Just for the record... Analogue or digital, 1980's synchronous modem or 2020 fibre, no matter what the technological cleverness any communication channel is subject to Shannon's Law. This states that the maximum channel capacity is a function of transmitted power, bandwidth, and signal-to-noise ratio. No technology reaches this theoretical limit. Marginal improvement in capacity just becomes ever harder to achieve. David L. _______________________________________________ Link mailing list [email protected] http://mailman.anu.edu.au/mailman/listinfo/link
